change of flower

Question

I have an Epipy that has a very large pink flower but the last season it has turned a smaller white flower. I did change the soil and I think it may have been that. Can you change it back to the pink?

Regards libby

Answer 1

I am not sure what an Epipy is- do you know of any other name for this plant?

Flower colors can sometimes change because of changes in the pH of the soil. High pH (alkaline soil) typically causes flowers of some species to turn pink, while low pH (acidic soil) can turn them blue or other colors. Here's how it works with Hydrangeas:

https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/change-hydrangea-color.htm

Or, this could be an example of a "sport":

https://www.gardeningknowhow.com/garden-how-to/info/plant-sport-mutations.htm